TY  - BOOK
AU  - Das, N.G.
TI  - Statistical methods: Statistical methods, 1, New Delhi : Tata Mc Graw-Hill Publishing Company, 2009
SN  - 0-07-026350-7
U1  - 311 
PY  - 2009///
CY  - New Delhi
PB  - Tata Mc Graw-Hill Publishing Company
ER  -